Single-beam ploughs Libra are perfect for small and medium-sized farms in all soil conditions with tractors from 30 HP to 78 HP. The ploughs are intended for performing middle deep ploughing, on flat fields, slopes and hills on all types of soil. Distance between plough bodies on the frame equaling 80 cm and height under the frame equaling 72 cm allows for unconstrained operation on fields with post-harvest residues. The main frame profile is 100 x 100 mm. Plough body width is adjusted in steps for three positions (25 cm - 30 cm - 35 cm). The adjustment is performed easily by proper switching of the adjustment screw on each body seat on the plough frame. The setting of the frame itself (alignment) for particular working widths is performed with the use of a turnbuckle. The adjustment of the first plough body is performed mechanically with the screw allowing moving the slider together with the frame on the stationary ledger of the plough Small widths of the furrow are recommended during pre-sow ploughing, especially on heavy soils which require good crumbling. While large widths of the furrows are recommended to pre-winter ploughing, especially on light and medium soils. The machine is equipped as a standard with a protection against stones in the form of a shear bolt. It guarantees a longer life of the plough. Each plough body can be equipped with a skim coulter or cutter of diameter of 41 cm. Maximum permissible power of the tractor for single-beam plough U030: plough 2 – 52 HP, plough 3 – 75 HP, plough 4 – 85 HP Working with a higher power tractor results in a loss of warranty.